Add best-in-class NKK buttons with sculptured caps to the lower bus row and ME section for old-school luxury
Add variations of general propose opto-isolated inputs and outputs. 2x8 In/Out, 16 In, 6 or 12 open collectors etc.
The SDI option adds a Blackmagic Arduino shield to the controller for reading and writing Camera Control Data
Upgrade to an industrial precision Hall effect joystick for increased ergonomic comfort and motion precision